US3412280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring device for servo systems
Assignee: Kollsman Instrument Corp
•
Filing: 1965-10-28
•
Granted: 1968-11-19
•
Expires: 1985-10-28
Abstract
No abstract record available.
Inventors
- 👤 Grande Robert S De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:04
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05B; G05B9/00; G05B9/02; G05D1/00; G05D1/0055; G05D1/0077
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
245 words
A SERVO MONITORING SYSTEM COMPRISING A SERVO SYSTEM HAVING AN OUTPUT ERROR SIGNAL, MONITORING MEANS HAVING INPUT TERMINALS AND OUTPUT TERMINALS, FIRST AND SECOND RELAY SWITCHING MEANS HAVING RESPECTIVE OPEN CIRCUIT POSITIONS AND CLOSED CIRCUIT POSITIONS AND INPUT CONNECTION CIRCUITS, AND INDICATOR MEANS OPERABLE FROM A FIRST POSITION TO AN INDICATION POSITION RESPONSIVE TO ERROR SIGNALS HAVING AT LEAST A PREDETERMINED MAGNITUDE FOR AT LEAST PREDETERMINED LENGTH OF TIME; SAID INPUT TERMINALS OF SAID MONITORING MEANS CONNECTED TO SAID OUTPUT ERROR SIGNAL; SAID OUTPUT TERMINALS OF SAID MONITORING MEANS CONNECTED TO SAID INPUT CONNECTION CIRCUIT OF SAID FIRST RELAY SWITCHING MEANS; SAID RELAY SWITCHING MEANS OPERABLE FROM ITS SAID OPEN CIRCUIT POSITION TO ITS SAID CLOSED CIRCUIT POSITION RESPONSIVE TO AN OUTPUT FROM SAID MONITORING MEANS WHICH EXCEEDS A PREDETERMINED VALUE; SAID FIRST RELAY SWITCHING MEANS CONNECTED TO SAID INPUT CONNECTION CIRCUIT OF SAID SECOND RELAY SWITCHING MEANS; SAID SECOND RELAY SWITCHING MEANS OPERATING FROM SAID OPEN CIRCUIT POSITION AND TO SAID CLOSED CIRCUIT POSITION RESPONSIVE TO OPERATION OF SAID FIRST RELAY SWITCHING MEANS TO ITS SAID OPEN CIRCUIT POSITION; SAID FIRST RELAY SWITCHING MEANS CONNECTED IN SERIES WITH SAID INDICATOR MEANS AND MOVING SAID INDICATOR MEANS FROM SAID FIRST POSITION TO SAID INDICATOR POSITION RESPONSIVE TO OPERATION OF SAID FIRST RELAY TO SAID OPEN CIRCUIT POSITION; SAID SECOND RELAY MEANS CONNECTED TO SAID INPUT TERMINALS OF SAID MONITORING MEANS AND SHORT CIRCUITING SAID INPUT TERMINALS RESPONSIVE TO OPERATION OF SAID FIRST RELAY SWITCHING MEANS.
Claim 2
Dependent Claim
245 words
A SERVO MONITORING SYSTEM COMPRISING A SERVO SYSTEM HAVING AN OUTPUT ERROR SIGNAL, MONITORING MEANS HAVING INPUT TERMINALS AND OUTPUT TERMINALS, FIRST AND SECOND RELAY SWITCHING MEANS HAVING RESPECTIVE OPEN CIRCUIT POSITIONS AND CLOSED CIRCUIT POSITIONS AND INPUT CONNECTION CIRCUITS, AND INDICATOR MEANS OPERABLE FROM A FIRST POSITION TO AN INDICATION POSITION RESPONSIVE TO ERROR SIGNALS HAVING AT LEAST A PREDETERMINED MAGNITUDE FOR AT LEAST PREDETERMINED LENGTH OF TIME; SAID INPUT TERMINALS OF SAID MONITORING MEANS CONNECTED TO SAID OUTPUT ERROR SIGNAL; SAID OUTPUT TERMINALS OF SAID MONITORING MEANS CONNECTED TO SAID INPUT CONNECTION CIRCUIT OF SAID FIRST RELAY SWITCHING MEANS; SAID RELAY SWITCHING MEANS OPERABLE FROM ITS SAID OPEN CIRCUIT POSITION TO ITS SAID CLOSED CIRCUIT POSITION RESPONSIVE TO AN OUTPUT FROM SAID MONITORING MEANS WHICH EXCEEDS A PREDETERMINED VALUE; SAID FIRST RELAY SWITCHING MEANS CONNECTED TO SAID INPUT CONNECTION CIRCUIT OF SAID SECOND RELAY SWITCHING MEANS; SAID SECOND RELAY SWITCHING MEANS OPERATING FROM SAID OPEN CIRCUIT POSITION AND TO SAID CLOSED CIRCUIT POSITION RESPONSIVE TO OPERATION OF SAID FIRST RELAY SWITCHING MEANS TO ITS SAID OPEN CIRCUIT POSITION; SAID FIRST RELAY SWITCHING MEANS CONNECTED IN SERIES WITH SAID INDICATOR MEANS AND MOVING SAID INDICATOR MEANS FROM SAID FIRST POSITION TO SAID INDICATOR POSITION RESPONSIVE TO OPERATION OF SAID FIRST RELAY TO SAID OPEN CIRCUIT POSITION; SAID SECOND RELAY MEANS CONNECTED TO SAID INPUT TERMINALS OF SAID MONITORING MEANS AND SHORT CIRCUITING SAID INPUT TERMINALS RESPONSIVE TO OPERATION OF SAID FIRST RELAY SWITCHING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |